This song is about the ship Calypso
, which was bought by Jacques-Yves Cousteau and converted to an oceanographic ship. Cousteau wanted to understand "The silent world" better, in order to protect it. "To live on the land we must learn from the sea" - Cousteau was the first to do research on pollution and its effects on the sea and received many honors for his accomplishments. John Denver cared deeply about nature and this song was a tribute to both Calypso and her captain and their valuable work.
Marthe - Amsterdam, Netherlands